aid: isbusinessemail
name: isBusinessEmail
image: https://isbusinessemail.com/og/default.png
description: isBusinessEmail provides a free API to determine whether an email address or domain belongs to a business, detecting Google Workspace
  and Microsoft 365 usage. The service offers up to 100 free checks per day, stores no email data, and is EU‑hosted, making it suitable for privacy‑focused
  applications. Users can obtain an API key instantly without a credit card, and the platform includes tools, lists, and integrations for developers.
url: https://raw.githubusercontent.com/api-evangelist/isbusinessemail/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-05 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-05'
modified: '2026-10-05'
tags:
- Company
- EmailVerification
- BusinessTools
- API
- EUHosted
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/isbusinessemail-agentic-access.yml
- type: RateLimits
  url: rate-limits/isbusinessemail-rate-limits.yml
- type: Spectral
  url: rules/isbusinessemail-rules.yml
- type: JSONLD
  url: json-ld/isbusinessemail-context.jsonld
- type: Vocabulary
  url: vocabulary/isbusinessemail-vocabulary.yml
- type: DataModel
  url: data-model/isbusinessemail-data-model.yml
- type: Deprecation
  url: lifecycle/isbusinessemail-lifecycle.yml
- type: Lifecycle
  url: lifecycle/isbusinessemail-lifecycle.yml
- type: ErrorCatalog
  url: errors/isbusinessemail-problem-types.yml
- type: Conformance
  url: conformance/isbusinessemail-conformance.yml
- type: LLMsTxt
  url: llms/isbusinessemail-llms.txt
- type: SecurityTxt
  url: well-known/isbusinessemail-security.txt
- type: WellKnown
  url: well-known/isbusinessemail-well-known.yml
- type: Hosts
  url: hosts/isbusinessemail-hosts.yml
- type: Vendors
  url: vendors/isbusinessemail-vendors.yml
- type: StatusPage
  url: https://status.isbusinessemail.com
- type: Security
  url: https://isbusinessemail.com/security
- type: Login
  url: https://isbusinessemail.com/login
- type: ChangeLog
  url: https://isbusinessemail.com/changelog
- type: Authentication
  url: authentication/isbusinessemail-authentication.yml
- type: VulnerabilityDisclosure
  url: security/isbusinessemail-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/isbusinessemail-domain-security.yml
- type: Website
  url: https://isbusinessemail.com
- type: Documentation
  url: https://isbusinessemail.com/docs
- type: APIReference
  url: https://isbusinessemail.com/docs/api
- type: GettingStarted
  url: https://isbusinessemail.com/docs/quickstart
- type: Support
  url: https://isbusinessemail.com/contact
- type: Blog
  url: https://isbusinessemail.com/blog
- type: TermsOfService
  url: https://isbusinessemail.com/terms
- type: PrivacyPolicy
  url: https://isbusinessemail.com/privacy
apis:
- aid: isbusinessemail:isbusinessemail-check-api
  name: isBusinessEmail Check API
  description: The Check API from isBusinessEmail — 2 operation(s) for check.
  humanURL: https://isbusinessemail.com/docs/api
  baseURL: https://api.isbusinessemail.com
  tags:
  - Check
  properties:
  - type: OpenAPI
    url: openapi/isbusinessemail-check-api-openapi.yml
  - type: JSONSchema
    url: json-schema/isbusinessemail-check-result-schema.json
- aid: isbusinessemail:isbusinessemail-feedback-api
  name: isBusinessEmail Feedback API
  description: The Feedback API from isBusinessEmail — 1 operation(s) for feedback.
  humanURL: https://isbusinessemail.com/docs/api
  baseURL: https://api.isbusinessemail.com
  tags:
  - Feedback
  properties:
  - type: OpenAPI
    url: openapi/isbusinessemail-feedback-api-openapi.yml
  - type: JSONSchema
    url: json-schema/isbusinessemail-check-result-schema.json
- aid: isbusinessemail:isbusinessemail-health-api
  name: isBusinessEmail Health API
  description: The Health API from isBusinessEmail — 1 operation(s) for health.
  humanURL: https://isbusinessemail.com/docs/api
  baseURL: https://api.isbusinessemail.com
  tags:
  - Health
  properties:
  - type: OpenAPI
    url: openapi/isbusinessemail-health-api-openapi.yml
  - type: JSONSchema
    url: json-schema/isbusinessemail-check-result-schema.json
- aid: isbusinessemail:isbusinessemail-usage-api
  name: isBusinessEmail Usage API
  description: The Usage API from isBusinessEmail — 1 operation(s) for usage.
  humanURL: https://isbusinessemail.com/docs/api
  baseURL: https://api.isbusinessemail.com
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/isbusinessemail-usage-api-openapi.yml
  - type: JSONSchema
    url: json-schema/isbusinessemail-check-result-schema.json
x-submission-notes: Tilfortis MB (Lithuania).
x-submission-probe: api.isbusinessemail.com 200 JSON index; /openapi.json 200 (OAS 3.1); /mcp POST 401 'Connect with OAuth or send API key'; invented
  path 404 problem+json; /docs and llms.txt 200.
x-submitted-by: hello@isbusinessemail.com (apis.io/add, 2026-10-05T07:56:41.786Z)
x-coverage:
  state: gated
  reason: partner-login
  method: derived
  generated: '2026-10-05'
  generator: derive-coverage.py (pre-flight evidence)
  detail: the company serves an API surface but requires credentials before any description of it can be read
  evidence:
  - url: https://api.isbusinessemail.com/openapi.json
    status: null
  - url: https://api.isbusinessemail.com/mcp
    status: 401
  - url: https://isbusinessemail.com
    status: 200
x-enrichment:
  date: '2026-10-05'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local